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ce4ac15850
PR-URL: https://github.com/nodejs/node/pull/35292 Reviewed-By: Andrey Pechkurov <apechkurov@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Masashi Hirano <shisama07@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Zeyu Yang <himself65@outlook.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
'use strict';
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// Test of fs.readFile with different flags.
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const common = require('../common');
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const fs = require('fs');
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const assert = require('assert');
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const path = require('path');
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const tmpdir = require('../common/tmpdir');
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tmpdir.refresh();
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{
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const emptyFile = path.join(tmpdir.path, 'empty.txt');
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fs.closeSync(fs.openSync(emptyFile, 'w'));
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fs.readFile(
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emptyFile,
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// With `a+` the file is created if it does not exist
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{ encoding: 'utf8', flag: 'a+' },
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common.mustCall((err, data) => { assert.strictEqual(data, ''); })
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);
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fs.readFile(
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emptyFile,
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// Like `a+` but fails if the path exists.
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{ encoding: 'utf8', flag: 'ax+' },
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common.mustCall((err, data) => { assert.strictEqual(err.code, 'EEXIST'); })
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);
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}
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{
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const willBeCreated = path.join(tmpdir.path, 'will-be-created');
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fs.readFile(
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willBeCreated,
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// With `a+` the file is created if it does not exist
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{ encoding: 'utf8', flag: 'a+' },
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common.mustCall((err, data) => { assert.strictEqual(data, ''); })
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);
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}
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{
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const willNotBeCreated = path.join(tmpdir.path, 'will-not-be-created');
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fs.readFile(
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willNotBeCreated,
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// Default flag is `r`. An exception occurs if the file does not exist.
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{ encoding: 'utf8' },
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common.mustCall((err, data) => { assert.strictEqual(err.code, 'ENOENT'); })
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);
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}
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